Yamatako Orochi (MP23-EN078) [25th Anniversary Tin: Dueling Heroes Mega Pack]

This card on the field can be treated as a Level 8 monster when used for a Synchro Summon. A Synchro Monster that used this card as material gains this effect, based on its original Level.
<br>• 8 or lower: This card gains 800 ATK/DEF.
<br>• 9 or higher: If this card attacks a Defense Position monster, inflict piercing battle damage.